问题
计算题
计算:
a4-(1-a)(1+a)(1+a2)。
答案
解:原式=-1+2a4。
计算:
a4-(1-a)(1+a)(1+a2)。
解:原式=-1+2a4。
以下第1-5题是五种不同职业人士的日常用语,请仔细阅读这些用语并和方框里的职业名称A-E进行配对。 | |
1. Open your mouth and say “Ah”. 2. Stop! Don’t move. Hands up! 3. Come and see for yourself. We have all kinds of clothes at a very good price. 4. What would you like to eat? 5. Good morning, boys and girls. Today we will have a new lesson. 1_________2_________3_________4_________5_________ |